68931612 has 18 divisors (see below), whose sum is σ = 174243888. Its totient is φ = 22977192.

The previous prime is 68931589. The next prime is 68931613. The reversal of 68931612 is 21613986.

68931612 is a `hidden beast` number, since 6 + 8 + 9 + 31 + 612 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1914767 = 68931612 / (6 + 8 + 9 + 3 + 1 + 6 + 1 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68931613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 957348 + ... + 957419.

It is an arithmetic number, because the mean of its divisors is an integer number (9680216).

Almost surely, 2^68931612 is an apocalyptic number.

It is an amenable number.

68931612 is an abundant number, since it is smaller than the sum of its proper divisors (105312276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68931612 is a wasteful number, since it uses less digits than its factorization.

68931612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1914777 (or 1914772 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 68931612 is about 8302.5063685612. The cubic root of 68931612 is about 410.0210419500.

The spelling of 68931612 in words is "sixty-eight million, nine hundred thirty-one thousand, six hundred twelve".